3849dc18b1
In particular: - try to optimize the integer emission into a 32-bit emission, when the high bits are all zero, and stop relying on the caller of `imm_r` to ensure this. - rename `Inst::imm_r`/`Inst::Imm_R` to `Inst::imm`/`Inst::Imm`. - generate a sign-extending mov 32-bit immediate to 64-bits, whenever possible. - fix a few places where the previous commit did introduce the generation of zero-constants with xor, when calling `put_input_to_reg`, thus clobbering the flags before they were read.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.